The following list showcases our ten favourites, and includes iPhone applications for social networking, travel, news, photography, productivity and more.

If your favourites aren’t covered, tell us all about them in the comments.

1. Facebook

Once an ugly duckling, but now – as of version 3 – a social-network-aware swan, Facebook is a triumph. The revised grid-based ‘home screens’ provide speedy access to regularly visited sections (news feed, notifications, and so on) and pages, and the experience is such that it in many ways beats the browser version.

2. Gorillacam

Pretty much from nowhere, Gorillacam arrived in December 2009 from the creators of the Gorillapod tripods. It mashes together a slew of features to hugely improve an iPhone’s camera (timer, multi-shot, spirit-level, on-screen grid, ‘press anywhere’ capture), meaning you can bin a half-dozen standalone apps that offer similar things.

3. RunKeeper Free

The prospect of Nike+ but better and for free might sound unlikely, but that’s what RunKeeper Free provides. The app uses an iPhone’s GPS capabilities to track your jogging route, and provides mapping and details of pace and calories burned. Activities can be shared online, and treadmill runs can be entered manually.

4. Stanza

Kindle’s grabbed many ‘electronic book’ headlines, but an iPhone or iPod touch is a perfectly competent alternative – at least if you have the right app to hand. Stanza enables you to download books from various sources (many of which offer free titles), and you can transfer your own ePub, PDF or eReader titles from the free Stanza Desktop.

5. Dropbox

Plenty of apps exist for transferring content between your computer and your device, but Dropbox is free and easier to use than most of its contemporaries. Dump files you want to sync in a folder on your computer and Dropbox for your device will enable you to access them, download them for offline viewing, and, in many cases, view them.